Paper-feeding machine and the like



G- E. A. EULE. PAPER'FEEDING MACHINE AND THE LIKE.

APPLICATION min are. I. 1920.

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PAPER FEEDING MACHINE AND THE LIKE.

'APPLICATION FILED DEC. 1, 1920.

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SAXONY, GERBIAN'Y.

PAPER-FEEDING MACHINE AND THE LIKE.

Application filed December 1, 1920. Serial No. 427,63E.

To all whom it may concern Be it known that I, GUSTAV EMIL ALwIN EULE, citizen of the German Republic, and resident of Mugeln, near Dresden, Saxony, and Republic of Germany, have invented certain new and useful Improvcments Relating to Paper-Feeding Magrid of bars, in between the bars of which a second grid serving as a conveying grid is adapted to move in all directions in a vertical plane, and also driving mechanism for the movable grid controlled by a feeler pr ovided at. the feeding point of the paper.

in the drawings Figures 1, 1", 222*, and 3, 3 are Views in side elevation and Figure 4, l is aplan view.

The main parts of the device are the stationary table grid d, in the spaced inter-.

vals of which the moving grid E is located, a narrow platform 3 which extends there from to the curvedpaper withdrawing rollers 1 and 2 driven inany' suitable manner, and the feeler M with its mechanism. The

feeler is mounted in the middle of the width of the table on a shaft N, which extends to one side of the table. At this point the shaft N is provided with a lever M which transmits the movements of the feeler, thereby afiecting the mechanism. If the paper does not project over the platform 3 in the zone indicated by the lines IA-4B adjacent to rollers 1, the free upwardly curved end of the feeler M can pass upwards through latch Q, mounted on the gear segment U to a position within the hooked end of a rod T which is moved backwards and forwards by the eccentric S mounted on the shaft R.

The gear segment U is thus coupled with the eccentric S for forward movement and transmits motion by means of the intermeshing gear member to the shaft TV.

On this shaft are rigidly mounted segments X under each bar of themovable grid,

the se ments X being connected-to each grid by means of two bands y, of which the one secured at one end to'the left hand .edge'of the segment is secured at the other end of the movable grid on the right of the segment, the other band being located at the side of the first band and having its ends secured to the right hand edge of the seg ment and to the grid to the left ofthe segment. In this manner the whole movable grid takes part in the forward movement of the segment, the return movement being effected by means of a spring Z. During the forward movement the cam disc L by its rotation returns the feeler M and the lever M .to their normal position and the thrust pin- P again permits the latch Q to be disengaged fromthe hooked arm T. The

.movement is not therefore repeated until the feeler M can move fully upwards again.

Before the above mentioned movements take place, the cam disc I rocks the shaft A by means of thee-am lever K. This movement is also imparted to the lever C and through the connecting rod G to the lever F which is mounted on the same shaft 13 as the lever C. Both pairs-of levers C C are collected by rods D on which the movable grid bars rest and for the movement of which grooves are provided between the bars of the stationarygridl Themethod of operation of the device is as follows:

In the first place the rods D driven by the cam disc I of the movable grid E lift the rods D above the bottom of thestationary grid, the movable grid is then under the action of the hooked arm T drawn forward along the rods D. The levers C with the rods D then carry out their return move ment so that the movable grid falls slightly below the level of the stationary table grid and finally the spring Z returns the movable grid.

The pile of the paper lying thereon is therefore raised, moved forwards and lowered again so long as the withdrawing rollers 1 cannot catch hold of a sheet.

Figures 1 1', show the position upon. starting the movement through the feeler M, Figures 2, 2*, the position after raising and drawing forward the movable grid and Figures 3, 3 the position when the movable grid has been lowered and returned.

I claim:

1. Automatic sheet conveying table consisting of a stationary grid adapted to support a pile of sheets of paper, or the like, a movable grid adapted to perform a fourmotion feed action in the intervals of the stationary grid, a feeler adapted to come in contact with the said sheets, and an operative connection from said feelcr to the movable grid to cause the latter to be operated only when the feeler is out of contact with said sheets.

2. Sheet conveying table according to claim 1 characterized by a thrust lever C under the control of a cam disk I and a tractive device X driven by an eccentric S and returned by a spring Z.

3. Automatic sheet conveying table according to claim 1, characterized by a pivotally mounted feeler M which by means of its thrust when there is a lack of paper at the sheet delivery point, brings a latch Q near to a hook T moved by the eccentric and thereby renders the tractive device operative to feed the pile.

4:. Automatic sheet conveying table comprising a stationary grid, a movable grid working in the intervals of the stationary grid, and means for imparting a toand-fro motion to said movable grid, said means comprising an operating member moving alternately in opposite directions, and flexible tractive bands, one of which has its rear end secured to said movable grid, while the other has its forward end secured to said grid at a point in advance of the one at which the rear end of the first-named band is attached, the said first-named band hav ing its forward end secured to said operating member at a point in advance of the one where the other band has its rear end attached to said operating member.

5. Driving means for a movable grid according to claim 1, characterized by the fact that firstly the push levers raise the movable grid, then the push levers lower it again and lastly the tractive devices return it to its initial position.

6. Automatic sheet-conveying mechanism comprising a support for a pile of sheets, said sheets being spread upon said support with each sheet in offset relation to its adjacent lower sheet, means to engage and feed a sheet from said pile, a movable feeder for advancing said pile of sheets, means for imparting a four-motion movement to said feeder, a feeler adapted to come in contact with said sheets, and an operative connection from said feeler to said feeder to cause the latter to be operated only when the feeler is out of contact with said sheets.

7. Automatic sheet-conveying mechanism comprising a support for a pile of sheets, said sheets being spread upon said support with each sheet in offset relation to its adjacent lower sheet, means to engage and feed a sheet from saidpile, a movable feeder for advancing said pile of sheets, means for imparting a four-motion movement to said feeder, a feeler adapted to come in contact with said sheets, and operating means for said feeding device controlled by said feeler.

8. Automatic sheet-conveying mechanism comprising a support for a pile of sheets, said sheets being spread upon said support with each sheet in offset relation to its adjacent lower sheet, means to engage and feed a sheet from said pile, a movable feeder for advancing said pile of sheets, means for imparting a four-motion movement to said feeder, a feeler adapted to come in contact with said sheets, and operating means for said feeding device controlled by said feeler to actuate the feeding device when the feeler is out of contact with said sheets.

Automatic sheet conveying mechanism comprising a support for a pile of sheets, said sheets being spread upon said support with each sheetin offset relation to its adjacent lower sheet, means to engage and feed a sheet from said pile, a movable feeder for advancing said pile of sheets, means for imparting a four-motion movement to said feeder, a feeler adapted to come in contact with said sheets, and operating means for said feeding device controlled by said feeler to throw said feeding device out of action when a feeler engages a sheet.

Signed at Dresden, Saxony, Rep. of Germany, this ninth day of November, A. D. 1920.

GUSTAV EMIL ALWIN EULE. 

